<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>实验3.1</title>
		<style type="text/css">
			h3{font-size: 24px;color: red;text-align: center;}
		</style>
	</head>
	<body>
		<h3>数学方程式</h3>
		<hr width="80%" size="2px" color="blue"/>
		<h1 align="center">2x<sup>2</sup>+3x=9</h1>
		<h1 align="center">x<sub>1</sub>+x<sub>2</sub>=10</h1>
	</body>
</html>
